img2dft 4.0.4 © 1996-2009 by Turku PET Centre
Calculates regional time-radioactivity concentration curves (TACs) from
an ECAT 6.3 or ECAT 7.x image and ECAT 6.3 format ROI file(s).
TACs are written in a DFT file as separate columns after the columns for
PET frame start and end time.
Region names, units etc, are written as title lines in the output file.
If filename for output file is not specified, it will be saved in the
default path replacing the extension of image filename with '.dft'.
Note that versions 4.x and after apply image upscaling for selecting
pixels inside ROIs; this might lead to smaller ROI volumes and therefore
affect also the ROI averages and variances.
Usage: img2dft [Options] <Image file> <ROI file(s)> [Output file]
Options:
-P[=<planes>]
Calculate all ROIs on all planes, or on specified plane;
by default, ROIs are calculated only on planes where they were drawn.
-V[=<sd|cv>]
Calculates also the variances inside ROI(s) and saves those in
a *.var file. With options -Vsd and -Vcv standard deviation or
coefficient of variation (%) is calculated and saved as *.sd or *.cv
file, respectively.
-tm Write time frame mid times instead of start and end times.
-format=<nci|dft1>
Output file format can be set to previous *.roi.nci/*.roi.kbq or
DFT (default).
-median
Calculates ROI median instead of ROI average.
-lms Calculates least median of squares estimate instead of ROI average.
-lts Calculates least trimmed square estimate instead of ROI average.
-h or --help
Print this message and exit.
--version or --build
Print software build information and exit.
--silent
Program works silently, printing only error and warning messages.
--verbose
Program prints more information about what it is doing.
Options -median, -lms and -lts can only be used for parametric images.
Example 1:
img2dft a1204dy1.img a1204*.roi a1204.dft
Example 2:
img2dft -P=4,6,8,10 -format=nci us4321dy1.img us4321*.roi
Example 3:
img2dft -Vsd uo286suv.v uo286*.roi
See also:
roilist,
roisplit,
lmlist,
eroi2img,
roipxl,
dft2html,
dft2res
Keywords: image, ROI, ECAT, TAC, analysis, modelling
This program comes with ABSOLUTELY NO WARRANTY. This is free software, and
you are welcome to redistribute it under GNU General Public License.
